Receiving device to determine the sampling rate for a received signal using a plurality of sampling rates

Abstract

This application discloses, among other things, a receiving device including channel signal output unit for sampling a received signal at a sampling rate switched one of in a predetermined range and between a plurality of values and outputting a channel signal, control unit for controlling the sampling rate in the channel signal output unit, response estimation unit for estimating a response based on the channel signal output by the channel signal output unit, evaluation unit for evaluating a reception characteristic based on an estimation result of the response by the response estimation unit, and determination unit for determining the sampling rate in the channel signal output unit based on an evaluation of the reception characteristic at a plurality of sampling rates by the evaluation unit.

Description

CROSS REFERENCES TO RELATED APPLICATIONS[0001]The present invention contains subject matter related to Japanese Patent Application JP 2006-204824 filed in the Japan Patent Office on Jul. 27, 2006, the entire contents of which being incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Technical Field[0003]The present invention relates to a receiving device, a receiving method, a program, and a recording medium, and in particular to a receiving device, a receiving method, a program, and a recording medium capable of improving the reception characteristic.[0004]2. Related Art[0005]In the past, in the wireless receivers, there has been proposed a fractional sampling method or a over sampling method for sampling a symbol signal a plurality of times.[0006]For example, studies have been done on a trade-off between the sampling interval and the characteristic in the direct sequence spread spectrum (DS / SS) modulation method (see e.g., K. J. Kim, S. Y. Kwon, E. K. Hong, and K....

AI Technical Summary

Benefits of technology

[0015]It is obvious from the studies in the past that the characteristic is improved by increasing the sampling rate. However, when the fractional sampling is performed, for example, requirement of increasing the operation speed of the circuit in accordance with the order arises, which increases the power consumption. Further, if parallel signal processing is used, the mounting area of the circuit increases, thus increasing the cost.

[0017]In consideration of the above circumstances, it is preferable to make it possible to improve the reception characteristic while preventing increase in power consumption, increase in the mounting area of the circuit, and increase in cost.

[0031]According to the embodiment of the invention, a signal can be received, in particular, since the sampling rate with a preferable reception characteristic can be selected from a plurality of sampling rates to control the sampling rate in receiving a signal, the reception characteristic can be improved while suppressing increase in poser consumption and the circuit mounting area and rising of cost.

Problems solved by technology

However, when the fractional sampling is performed, for example, requirement of increasing the operation speed of the circuit in accordance with the order arises, which increases the power consumption.

Further, if parallel signal processing is used, the mounting area of the circuit increases, thus increasing the cost.

Even though the characteristic is improved, increase in power consumption, increase in the mounting area of the circuit, and increase in cost are not preferable for wireless terminals in any cases.

Images